yesterday the protests expanded to yemen, iran and iraq and now all u.s. diplomatic missions are on high alert. jessica, andrea? >> that was kristin fisher reporting live from outside the state department this morning. >>> how did a youtube video no one really saw lead to all this violence? join meeting this morning is a professor with american university. she's just back from living in cairo for two years. professor, thank you very much for being here with us. >> thank you. >> everyone has said there is no excuse for violence no matter what this film was about. but you've seen clips from the film. it's now been pulled off of youtube, especially in the middle eastern countries. is it so inflammatory to explain this murderous havoc we're seeing right now? >> well, yes, as you stated i watched the film. it was considered to be very, very offensive to the prophet muhammad. for those who know about the religion of islam, they're very devout if their love for the prophet muhammad. there's no excuse for violence and peaceful protest is the goal in the middle eas